(Some herring x glaucous-winged hybrids very like Thayer’s ... linked to egging and competition with expanding great black-backed gull populations.

Medium-size, 3-cycle gull with sloping head, medium-size bill. On adult, note yellow legs, pale eyes, and neat “ring bill.” Breeding adult: pale gray upperparts; black wing tip with white ...

The animal welfare charity is looking at reports that a great black-backed gull was repeatedly run over in the car park of McDonald's in Harwich, Essex. The bird had been nursed back to health at ...